Before:
  call ale#assert#SetUpLinterTest('dart', 'dartanalyzer')

After:
  call ale#assert#TearDownLinterTest()

Execute(The default command and executable should be correct):
  AssertLinter 'dartanalyzer', ale#Escape('dartanalyzer') . ' %s'

Execute(The executable should be configurable):
  let g:ale_dart_dartanalyzer_executable = 'foobar'

  AssertLinter 'foobar', ale#Escape('foobar') . ' %s'

Execute(The .packages file should be set if detected):
  call ale#test#SetFilename('../test-files/dart/foo')

  AssertLinter 'dartanalyzer', ale#Escape('dartanalyzer')
  \   . ' --packages ' . ale#Escape(ale#path#Simplify(g:dir . '/../test-files/dart/.packages'))
  \ . ' %s'